Wind-wheel.



PATENTED APR. 11, 1905.

M. A. & B. H. SHARP.

WIND WHEEL.

APPLICATION FILED DEO.19, 1903.

2 SHEETS-SHEET 1.

Patented April 11, 1905.

UNITED STATES PATENT UF MARVIN A. SHARP AND BlRI) H. SHARP, OF LAlfOlillG, TEXAS.

WIND-WHEEL.

SPECIFICATION forming part of Letters Patent No. 787,366, dated April 11, 1905.

Application filed December 19,1903. Serial No. 185,851.

To u-lmm if may concern/.-

be it known that we, Manvnx A.S111\1u and B1111) ll. 51mm, citizens of the United States, residing at Laporte. in the county of Harris and State of Texas. have invented new and useful lmprovements in \VinddYhecls, of which the following is a specilication.

This invention relates to windmills; and the primary object of the same is to provide the curved blades or vanes with means of an advantageous nature wluch will produce an automatic operation to pos1t1on the said blades or 1 vanes to the best advantage in relation to a current of wind and also to so connect the curved blades to a shaft that astrong and durable structure will result.

A further object of the invention is to include in connection with a windmill-shaft and pump-rod simple means for regularly reciprocating said rod.

The invention consists in the construction arms t and The arms l and 5 may be termed fulcrum-arms," on which the blade 6 is shown, and said arms will extend outwardly from the disks 2 and 3 at regular intervals and be attached to the hinge-straps of other blades, as just explained. Secured to the central portion of one side of the blade or vane 6 is a connecting-rod 9, having its inner end movably attached to the upper end of a lever 10, fulcrumed on the arm t, and having a weight ll adjustably hold on the lower extremity thereof and retained in place by i means of a set-screw 12.

Similar numerals of reference are employed 1 to indicate corresponding parts in the several views.

The numeral 1 designates a shaft of any suitable length having on the upper extremity thereof two hub-disks 2 and 3, the lower disk 2 being of materially larger dimensions than the upper disk to adapt it to support a greater portion of the weightof the curved blades or vanes which are connected thereto. Projecting outwardly from the hub-disks 2 and 3 are arms l and 5, the arms-5 of the disk 3 being longer than the arms T and disposed at an upward angle of inclination for attachment to curved blades at a proper point. Only one blade 6 is shown, and projecting from the in- T nor edge thereof are upper and lower hingestraps T and s. respeet1vely, pivoted or movably coupled to the outer extrenuties of the The connecting-rod and lever 10. with its weight 11. form a counterpoisc means which operates to hold the blade in normal position and adds to each blade sufficient resistance to withstand movement on the fulcrum devices therefor under the force of ordinary windcurrents. In the event that these currents increase in pressure intensity the blade will be thrown around or move on its fulcrum means and pull the lever 10 so that the lower weighted end thereof will be thrown outwardly, and the moment that the wind force is reduced to such an extent as to permit the counterpoise means to operate the latter will draw the blade back to normal position. This automatic adjustment will be found materially advantageous in windmill structures, especially as it obviates any tendency toward breakage of the blades under abnormally high airpressure. I

On the shaft 1, at a suitable elevation, a camwheel l?) is secured and has the periphery thereof provided with convolutions 14:, which give the rim of the wheel an elevated position at one point and a depressed position at a diametrically opposite point. The upper end of the pump-rod 15 has pins 16 projecting inwardly therefrom, on which are disposed rollers 17, held in close contact with the upper and lower edges of the rim of the wheel 13, and as the latter is operated the pump-rod will have imparted thereto a regular vertical reciprocation.

The improved windmill structure, as explained, will form an :ulvantageous acquisition to the art to which it pertains and may be used in connection with all classes of aerial motors employing a rotating wheel embodying a series of blades or vanes.

It is proposed to use metals or other substances best adapted for the purpose in the construction of the several parts, and it will be understood that changes in the proportions, dimensions, and minor details may be resorted to without in the least departing from the spirit of the invention.

Having thus fully described the invention, what is claimed as new is In a windmill, the combination of a shaft, having hub-disks attached to the upper eX- tremity thereof and spaced apart from each other, the disks being provided with rigid radial arms, curved blades hinged to the outer terminals of said arms at points above and below the horizontal centers of the said blades,

MARVIN A. SHARP. BIRD H. SHARP.

Witnesses:

N. MCNEILL, CHAS. D. BENNETT. 

